Shock absorber for railroad crossings



.1. NELSQN SHOCK ABSORBER FOR RAILROAD CROSSINGS Filed March 12, 1923 3 1111211 T 01, J Man/- Qbtoz nu;

Patented @ct. 23, 19 23.

Jorrnfnsrson, OTTAWA}; KerisAs.

sEooK ABsoReEn-Iron nnrnnonn onoss'rives.

Application filed and 12, 1923.; Serial No. 524,422.

To all whomit'may concern! 7 Be it known that I, JOHN NELSON, a citi zen' of the'United States of America, residcharacter that is adapted for overcoming the for the purpose of illustration is shown a noise caused by the vibration and jar of atrain or street car'passing over a frog or crossing.

A further object of the-invention is to provide an improved form or" cross plate or bridge for accomplishing this purpose.

Other objects and advantages of the inventionwill be apparent during the course of the following description. 1

In the accompanying drawing forming a part of this specification andfin which like numerals are employed to'designate like parts throughout the same,

Figure 1 is aside elevational view, partly in section and partly broken away, of a track crossing with this improved form of crossing plate or bridge in position thereon with a pair of car wheels resting uponthe said cross plate or bridge,

Figure 2 is a top plan view of the device shown in Fig. 1,

Figure '3 is a longitudinal sectional view through one of the pairs of cross arms forming part of the cross plate or bridge:

embodying this invention.

Figure 4c is a perspective view of the cross plate or bridge embodying this invention, Figure 5 is a fragmentary top plan view of a modified form of the cross plate or bridge,

Figure 6 is a fragmentary top plan view of a further modified form of the invention,

and

. 'Figure 7 is a vertical sectional view of the modified rorm shown inFig. 6.

In the accompanying draw ng, wherein preferred embodiment of this invention, the numeral 5 designates a car axle carrying the car wheels 6 properly positioned thereupon, the said car wheels comprising the usual tread portions 7 and perpendicular flanges 8i The inter-section of crossing t-racksform'ed by the rails'9 and'lOf'are' formed withthe usual neck portion channel or groove 12., i

Referring particularly to Figs'l to 4c in elusive there-isshown Whatl have termed as across plate or bridgethat is constructed of any suitable resilient material and is Out or molded into the form of a cross that consists of the intersecting point 13 and laterally extending arms 14. These arms are provided, intheir upper face, with longitudinally extending grooves 15 that intersect at the point of intersection 13 formed by the said arms, there being further provided a single reinforcingwire 16 for adding strength to the said cross plate'or bridge. The wire 16 is suitably embedded substantiallywithin the central portion of the arms 14 andextending longitudinally thereof. This cross plate or bridge is adapted to be positioned within the channels or grooves 12 formedby' the intersecting portions of rails f9 and 10 and are adapted for being engagedfortraveled over by the perpendicular flange 8 formedupon the car wheels 6 for raising the tread portions 7 of the said wheels 0d of the heads 11 of the tracks thereby overcoming the vibration and jar caused by the said wheels passing over the grooves or chan; nel 12 formed in the trackextending at right angles to the track being traversed upon by the said car wheels. so

- Referring particularly to Fig. 5 where there is shown a modified form of the cross plate or bridge which, however, employs identically the same general formation whichconsists of the intersecting point 13. laterally extending arms '14, and grooves 15. This form of the invention employs as a reinforcing means the series of three spaced wires l6 that extend longitudinallv oi. the arms 14 and are properly embedded therein.

Referring particularly to,Figs. 6 and 7 wherein there is shown a further modified form of the cross plate or bridge which employs a series of three longitudinally extending reinforcing wires 17 that are cur bedded within the arms 14. There is further provided as a reinforcing means or wearreducer relatively small strands of wire 18 St! I further description is deemed necessary.

I It is to be understood that the form of this invention herewith shown and described 18 to be taken as a preferred example of the same, and that var ous changes in the shape,

size, and arrangement of parts .may be resorted to without departing from the spirit of the invention or the scope'of the subj oined claims.

Having thus described the invention, I

' claim 1. The combination with a railroad track crossing or frog, of a groove filling bridge. and reinforcing means for said bridge.

- 2. The combination with a railroad track crossing or frog, of a groove filling bridge and reinforcing means embedded within said bridge. e

3. The combination with a railroad track crossing or frog, of a. groovefilling bridge formed of resilient material, and reinforcing means for said bridge.

4, The combination with a railroad track crossing or frog, of a' groove filling bridge resembling a cross, and reinforcing means for the arms of said cross.

5. The combination with a railroad track crossing or frog, of a groove filling bridge resembling a cross, and reinforcing means embedded within the arms of said cross.

6. The combination with a railroad track crossin or from of a roove fillin brid e 3 D1 b O b resembling a cross, and reinforcing wires embeddcdwithin the arms of said cross.

7 7. The combination with a railroad track crossing or frog, of a groove filling bridge resembling a cross, and reinforcing wire em bedded within the arms of said cross and extending longitudinally thereof.

8. The combination with a railroad track crossing or frog, of a groove filling bridge resembling a cross, reinforcing wires embedded within the arms of said cross extending longitudinally thereof, and wear-redue ing means carried by said arms.

9. The combination with a railroad track crossing or frog, of a groove filling bridge resembling a cross, reinforcing wires embedded within the arms of said cross extending longitudinally thereof, and perpendicular wear-reducing wires embedded within said arms.

In testimony whereof I afiix my signature.

JOHN NELSON. 

